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Search: id:A113090
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| 1, 3, 1, 21, 12, 1, 331, 255, 39, 1, 11973, 11326, 2442, 120, 1, 1030091, 1136709, 310864, 22206, 363, 1, 218626341, 272246616, 89081163, 8266954, 199839, 1092, 1, 118038692523, 162043308555, 61099562421, 6923071251, 220482175, 1796349
(list; table; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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Triangle begins:
1;
3,1;
21,12,1;
331,255,39,1;
11973,11326,2442,120,1;
1030091,1136709,310864,22206,363,1;
218626341,272246616,89081163,8266954,199839,1092,1; ...
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PROGRAM
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(PARI) {T(n, k)=local(M=matrix(n+1, n+1)); for(r=1, n+1, for(c=1, r, M[r, c]=if(r==c, 1, if(c>1, (M^3)[r-1, c-1])+(M^3)[r-1, c]))); return((M^3)[n+1, k+1])}
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CROSSREFS
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Cf. A113084, A113081, A113091 (column 1).
Sequence in context: A107717 A000369 A136236 this_sequence A138354 A010291 A027477
Adjacent sequences: A113087 A113088 A113089 this_sequence A113091 A113092 A113093
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KEYWORD
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nonn,tabl
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Oct 14 2005
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Search completed in 0.002 seconds
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